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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10352309 B1

PDFFull Text
Date of Patent:
Jul. 16, 2019

Filed:

Sep. 15, 2016

Fluid pressure producing method and fluid pressure producing device

Applicant:

Sugino Machine Limited, Uozu, Toyama Prefecture, JP;

Inventors:

Sho Sato, Toyama, JP;

Shin Isikura, Toyama, JP;

Assignee:

SUGINO MACHINE LIMITED, Uozu, Toyama, JP;

Attorney:

United IP Counselors, LLC

Primary Examiner:

Dominick L Plakkoottam

Assistant Examiner:

Connor J Tremarche

Int. Cl.
CPC ...
F04B 9/103 (2006.01); F04B 53/14 (2006.01); F04B 51/00 (2006.01); F04B 19/22 (2006.01); F04B 49/12 (2006.01); F04B 9/109 (2006.01); F04B 5/02 (2006.01); F04B 9/113 (2006.01); F04B 11/00 (2006.01); F04B 23/06 (2006.01); F04B 49/02 (2006.01); F04B 49/06 (2006.01); F04B 49/08 (2006.01); B26F 3/00 (2006.01);
U.S. Cl.
CPC ...
F04B 9/109 (2013.01); F04B 5/02 (2013.01); F04B 9/103 (2013.01); F04B 9/113 (2013.01); F04B 11/0008 (2013.01); F04B 19/22 (2013.01); F04B 23/06 (2013.01); F04B 49/022 (2013.01); F04B 49/065 (2013.01); F04B 49/08 (2013.01); F04B 49/12 (2013.01); F04B 51/00 (2013.01); F04B 53/14 (2013.01); B26F 3/004 (2013.01);
Abstract

A fluid pressure producing method reduces fluctuations in the pressure of a fluid pressurized using a plunger driven by applying the pressure of a working medium to a double-acting piston. The method includes switching a moving direction of the piston when detecting the piston reaching a movement end, operating the working medium pump to discharge the working medium at a maximum flow rate while the load is less than the load limit after the moving direction of the piston is switched, and detecting a pressure of the fluid and feeding back the detected pressure of the fluid and performing feedback control of the pressure of the fluid to eliminate a difference between the pressure of the fluid and a target pressure of the fluid.

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